Here are some Pokemon sapphire can't get: Latios, Groudon, Mareep, Gligar, Shuckle, Zangoose. Keep in mind this is a short list most kanto Pokemon you can't get in sapphire and johto as well.
i dont have sapphire
U dont get prinpulp in pokemon sapphire!!!
no, they dont.
i dont think you can trade from sapphire.
you dont
i dont think you can do it legitly
me dont nkow
uhh i dont know
u dont
dont be idiots!
Wynaut. i dont know if i spelled that right.
you dont but since they arent on the pokedex you dont need to